| 摘要 |
1,236,739. Making electrodes. GENERAL ELECTRIC CO. 28 March, 1969 [1 April, 1968], No. 16313/69. Heading B3A. [Also in Division H1] In a zinc electrode comprising a support and zinc powder pressed against opposite surfaces of the support, the zinc powder is amalgamated with mercury in the surface of the electrode. A die is filled with a zinc powder which has not been amalgamated by mercury or by mixing zinc powder in a mercury salt electrolyte such that the powder becomes amalgamated to 5- 20% by weight mercury. A metallic screen, preferably of silver, is used as a support, and an electrical lead is attached to the support, which is then placed in the die. The powder mixture is pressed against the support at a pressure of about 5000 p.s.i. The pressed electrode is contacted by an aqueous solution of a mercury salt, so that the powder in the surface of the electrode is amalgamated by the mercury. The electrode is finally washed in distilled water to remove the salt residue therefrom. |
